AJAX All in One - a Spring web application serving a collection of popular AJAX packages: Yahoo! UI, Dojo, qooxdoo, MochiKit, DWR, JSON RPC. URL mapping, JavaScript compression ... a clean way to integrate with your own web application if you want Ajax.

AMP was inspired by RoR partials. It is a framework-independant Java API that enables processing of AJAX requests in a normal MVC pattern. It is currently integrated with the Spring framework to allow for easy configuration.

AjaxAnywhere turns any set existing JSP/JSF components into AJAX-aware components without a complex JavaScript coding. Simply separate your web page into multiple zones, and use AjaxAnywhere to refresh only those zones that needs to be updated.

A set of libraries to interface with the Amazon Simple Storage Service (S3). Amazon S3 provides a simple web services interface that can be used to store and retrieve any amount of data, at any time, from anywhere on the web.